Chem3b_suzuki - Shayna Russell 18710646 April 22, 2009 The...

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Shayna Russell 18710646 April 22, 2009 The Suzuki Reaction The purpose of a Suzuki reaction is to create carbon-carbon bonds between an aryl halide and an aryl boronic acid through the use of a palladium catalyst. The experiment carried out this week concerned the fusing of 4-bromoacetophenone and phenylboronic acid to produce the diaryl molecule. .21g of bromoacetophenone, .134g of phenyl boronic acid, 2mg of palladium(II) acetate, .134g of tetrabutylammonium bromide, and .33g of potassium carbonate and 1mL of water were reacted together in a 5mL reaction flask. Pd(II) was oxidized to Pd(0) by hydroxide ions provided by the potassium carbonate. As the magnetic stir bar turned, the reaction pushed for the oxidative addition of palladium onto 4-bromoacetophenone, returning palladium to it’s Pd(II) by insertion into a carbon-bromine bond. After oxidative addition, two ligands switch places: a phenyl group on boron for a hydroxide ligand on Pd(II). Tetra-butyl ammonium bromide is used as the
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Chem3b_suzuki - Shayna Russell 18710646 April 22, 2009 The...

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